Though this Porter-Cable tool is priced higher than comparable DeWalt and Makita models, the 557 is Amazon.com's top-selling plate joiner. Its success is perhaps due to its very powerful 7-1/2 amp motor--the largest in the industry--which turns the blade at 10,000 rpm and does an excellent job of making clean cuts in any kind of wood. As well as cutting slots for the standard no. 0, 10, and 20 biscuits, Porter-Cable's joiner features an exclusive, full-thickness, FF biscuit developed especially for cabinet face frames. Another unique feature of the Porter-Cable joiner is the 2-inch blade (included), which is small enough to make cuts in stock as narrow as 1-1/2 inches. We found the microheight adjustment works well, allowing for precise biscuit placement. The tool is well balanced and comfortable to use.